Github user aokolnychyi commented on the issue:
https://github.com/apache/spark/pull/18692
@gatorsmile thanks for the input. Let me check that I understood everything
correctly. So, I keep it as a separate rule that is applied only if constraint
propagation enabled. Inside the rule, I rely on `join.constraints` to infer the
join conditions. The remaining logic stays the same. Correct?
I guess that `InferFiltersFromConstraints` can be used as a guideline.
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